This is a PTSD technique used by a colleague of mine from Detroit, Michigan using a work of art from Francisco Goya found in Museo del Prado in Spain.  I have seen this work of art live a couple of times in Madrid and never would have made the connection LaMaurice did:

Police Psychology:  The Folly of Fear

 LaMaurice H. Gardner, Psy.D.

This is a picture called the Folly of Fear. Now in the background of the picture (in the past) you can see Spanish soldiers engaged in combat. They are beside the tree fighting for their lives. You can see the front of a cannon just to the left of the left most figure. They are at war.

 Now, in the foreground of the picture (in the present) you can see these same Spanish soldiers. What are they being confronted by? What is that standing over them?

 “A Ghost.” (grim reaper, death, etc.)

 Yes. And what is a Ghost…. a Ghost is a memory from the past. (more…)